/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraValidationRules.h
This validation rule is used by the collision module to check that renderers don't use any opaque or masked materials when depth buffer collisions are used.
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(Category="Validation", DisplayName="Validate GPU Depth Collision Module") class UNiagaraValidationRule_NoOpaqueRenderMaterial : public [UNiagaraValidationRule](API\Plugins\Niagara\UNiagaraValidationRule)